XYCOM XVME-542現貨
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[關鍵詞] 分散控制系統(DCS)可編程序控制器(PLC)安全儀表系統(SIS)MOTOROLA MVME 工業用模組 壓縮機組控制系統(CCS)ESD系統;振動監測系統卡件
致力于為您尋找各種配件,提供緊急備件支持 品種齊全 可為用戶定制備件儲備
【用誠信做生意,用心經營】
【產品經過嚴格檢測,質保一年】
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多種類現貨庫存 響應速度快 減少用戶資本投入,提高備件利用率
5. 生成電機的FB
電機的FB包括以下邏輯功能:
(1) 啟動和停止輸入。
(2) 允許設備操作的一系列互鎖(泵和攪拌電機)。互鎖狀態存儲在OB1的臨時局域數據(L堆棧)中(“Motor_enable”和“Valve_enable”),并且當電機的FB被處理時與啟動和停止的輸入進行邏輯組合。
(3) 來自設備的反饋必須在一個特定的時間內出現,否則就假定有故障或錯誤出現,并使電機停止。
(4) 時間點和響應時間或錯誤故障循環持續時間都必須被指定。
(5) 如果啟動按鈕被按下并且電機被使能,則設備自行接通并運行直至按下停機按鈕。
(6) 當設備接通時,一個定時器啟動運行,如果在定時器的時間到達之前未接到來自設備的響應信號,則停機。
在STEP 7中,每一個被不同的塊調用的塊一定要在調用它的塊之前生成,因此在樣板程序中必須在OBl之前先生成電機的FB。STL編程語言的FBl程序部分如下:
Network l 啟動停止和鎖存
A(
O #Start
O #Motor
)
AN #Stop
= #Motor
Network 2 啟動監控
A #Motor
L #Response_Time
SD #Timer No
AN #Motor
R #Timer No
L #Timer No
T #Timer bin
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XYCOM XVME-542
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XYCOM XVME-542
ACCURAY 083892002 NSPP 083892002
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ACCURAY 1-061551-002 USPP 1061551002
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XYCOM XVME-542